EP15-XL6
EP15-XL7
EP14-XL6
EP14-XL7
EP15-XL1
EP15-XL2
EP14-XL1
EP14-XL2
PIPE DIMENSIONS
Connection
internal thread G1 1/2
external thread G2
(XL1) Heating medium supply
internal thread G1 1/2
external thread G2
(XL2) Heating medium return
internal thread G1 1/2
external thread G2
(XL6) Brine in
internal thread G1 1/2
external thread G2
(XL7) Brine out
Brine side
COLLECTOR
Rock heat, recommen-
ded active drilling depth
(m)
Surface soil heat, re-
commended collector
length (m)
Type
3x150-5x2003x450-4x45028 kW
Applies to PEM hose 40x2.4 PN 6.3.
These are rough example values. At installation the
correct calculations must be made according to local
conditions.
Caution
The length of the collector hose varies depend-
ing on the rock/soil conditions, climate zone
and on the climate system (radiators or under-
floor heating).
Max length per coil for the collector should not exceed
500 m.
The collectors must always be connected in parallel with
the possibility of adjusting the flow for the relevant coil.
For surface soil heat, the hose should be buried at a
depth determined by local conditions and the distance
between the hoses should be at least 1 metre.
For several bore holes, the distance between the holes
must be determined according to local conditions.
Ensure the collector hose rises constantly towards the
heat pump to avoid air pockets. If this is not possible,
airvents should be used.
Because the temperature of the brine system may fall
below 0 °C, it must be protected against freezing down
to -15 °C. When making the volume calculation, 1 litre
of ready mixed brine per meter of collector hose (applies
when using PEM-hose 40x2.4 PN 6.3) is used as a guide
value.
Caution
Because the temperature of the brine system
varies depending on the heat source, the 5.1.7
“br pmp al set.” menu must be set to a suit-
able value.
NIBE F1355Chapter 4 | Pipe connections16
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